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Diamond deal Costco

There are 8 new Diamond deals available in the Costco weekly ad from 01/20/2026.

Stores 1
Costco
WalmartTargetDollar GeneralSam's ClubKohl'sAlbertsonsBelkSafewayJC PenneyJewel-OscoVonsStop&ShopRalphsTJ MaxxMariano'sMenards
8 of 160 deals
Costco
Costco Round brilliant 1.10 ctw diamond earrings and or 0.76 ctw necklace offer
$600 off

Round brilliant 1.10 ctw diamond earrings and or 0.76 ctw necklace

Still valid for 1 day
$2,999.99
$2,399.99
Costco
Costco Garnet and Diamond 14kt Yellow Gold Earrings offer

Garnet and Diamond 14kt Yellow Gold Earrings

Still valid for 5 days
$999.99
Costco
Costco Round Brilliant 7.00 ctw VS2 Clarity, I Color Diamond 18kt White Gold Hoop Earrings offer

Round Brilliant 7.00 ctw VS2 Clarity, I Color Diamond 18kt White Gold Hoop Earrings

Still valid for 5 days
$12,999.99
Costco
Costco Round Brilliant 1.18 ctw VS2 Clarity, I Color Diamond 14kt Two Tone Gold Ring offer

Round Brilliant 1.18 ctw VS2 Clarity, I Color Diamond 14kt Two Tone Gold Ring

Still valid for 5 days
$2,999.97
Costco
Costco Multi Cut 25.52 ctw VS2 Clarity, H Color Diamond 18kt White Gold Necklace offer

Multi Cut 25.52 ctw VS2 Clarity, H Color Diamond 18kt White Gold Necklace

Still valid for 5 days
$34,999.99
Costco
Costco Round Brilliant 0.60 ctw VS2 Clarity, I Color Diamond 14kt White Gold Stud Earrings offer

Round Brilliant 0.60 ctw VS2 Clarity, I Color Diamond 14kt White Gold Stud Earrings

Still valid for 5 days
$999.99
Costco
Costco Round Brilliant 0.83 ctw VS2 Clarity, I Color Diamond 14kt White Gold Men's Ring offer

Round Brilliant 0.83 ctw VS2 Clarity, I Color Diamond 14kt White Gold Men's Ring

Still valid for 5 days
$2,499.99
Costco
Costco Oval & Round Brilliant 14.19 ctw VS2 Clarity, I Color Diamond 18kt White Gold Necklace offer

Oval & Round Brilliant 14.19 ctw VS2 Clarity, I Color Diamond 18kt White Gold Necklace

Still valid for 5 days
$34,999.99

Related brands

active
Diamond logo
Diamond
Dove logo
Dove
Hershey's logo
Hershey's
Kellogg's logo
Kellogg's
Johnnie logo
Johnnie
Candy logo
Candy

Stores with Diamond in their assortment

JC Penney

JC Penney

Sam's Club

Sam's Club

Costco

Costco

Jewel-Osco

Jewel-Osco

Safeway

Safeway

Walmart

Walmart

Belk

Belk

Dollar General

Dollar General

Albertsons

Albertsons

Menards

Menards

Kohl's

Kohl's

Vons

Vons

TJ Maxx

TJ Maxx

Stop&Shop

Stop&Shop

Mariano's

Mariano's

ShopRite

ShopRite

Five Below

Five Below

Claire's

Claire's

Littman Jewelers

Littman Jewelers

Ace Hardware

Ace Hardware

Haggen Food

Haggen Food

C Town

C Town

Market Basket

Market Basket

IGA

IGA

Nearest Costco branch

This Diamond deal Costco is available in the following branches based on your set location:

New York
Automatically locate
Costco logo
Costco976 3rd ave 11232-2400 New York
6.60 km
Costco logo
Costco3250 vernon blvd 11106-4927 Long Island City NY
7.85 km
Costco logo
Costco517 e 117th st 10035-4409 Harlem NY
10.95 km
All locations

Diamond price Costco🕒

OfferNameStoreRegular priceDeal pricePromotionStart dateEnd date
Costco Multi Cut 25.52 ctw VS2 Clarity, H Color Diamond 18kt White Gold Necklace offerMulti Cut 25.52 ctw VS2 Clarity, H Color Diamond 18kt White Gold NecklaceCostco$34,999.9919 January 202625 January 2026
Costco Round Brilliant 1.18 ctw VS2 Clarity, I Color Diamond 14kt Two Tone Gold Ring offerRound Brilliant 1.18 ctw VS2 Clarity, I Color Diamond 14kt Two Tone Gold RingCostco$2,999.9719 January 202625 January 2026
Costco Round Brilliant 0.83 ctw VS2 Clarity, I Color Diamond 14kt White Gold Men's Ring offerRound Brilliant 0.83 ctw VS2 Clarity, I Color Diamond 14kt White Gold Men's RingCostco$2,499.9919 January 202625 January 2026
Costco Garnet and Diamond 14kt Yellow Gold Earrings offerGarnet and Diamond 14kt Yellow Gold EarringsCostco$999.9919 January 202625 January 2026
Costco Round Brilliant 7.00 ctw VS2 Clarity, I Color Diamond 18kt White Gold Hoop Earrings offerRound Brilliant 7.00 ctw VS2 Clarity, I Color Diamond 18kt White Gold Hoop EarringsCostco$12,999.9919 January 202625 January 2026
Costco Multi Cut 25.52 ctw VS2 Clarity, H Color Diamond 18kt White Gold Necklace offerMulti Cut 25.52 ctw VS2 Clarity, H Color Diamond 18kt White Gold NecklaceCostco$34,999.9912 January 202618 January 2026
Costco Round Brilliant 12.00 ctw VS2 Clarity, I Color Diamond 14kt White Gold Halo Bracelet offerRound Brilliant 12.00 ctw VS2 Clarity, I Color Diamond 14kt White Gold Halo BraceletCostco$16,999.9912 January 202618 January 2026
Costco Cushion Cut 5.02 ct Center VS1 Clarity, Fancy Yellow Diamond Platinum Three Stone Ring offerCushion Cut 5.02 ct Center VS1 Clarity, Fancy Yellow Diamond Platinum Three Stone RingCostco$69,999.9912 January 202618 January 2026
Costco Round Brilliant 7.00 ctw VS2 Clarity, I Color Diamond 18kt White Gold Hoop Earrings offerRound Brilliant 7.00 ctw VS2 Clarity, I Color Diamond 18kt White Gold Hoop EarringsCostco$12,999.9912 January 202618 January 2026
Costco Round Brilliant 0.83 ctw VS2 Clarity, I Color Diamond 14kt White Gold Men's Ring offerRound Brilliant 0.83 ctw VS2 Clarity, I Color Diamond 14kt White Gold Men's RingCostco$2,499.9912 January 202618 January 2026
Costco Round Brilliant 0.60 ctw VS2 Clarity, I Color Diamond 14kt White Gold Stud Earrings offerRound Brilliant 0.60 ctw VS2 Clarity, I Color Diamond 14kt White Gold Stud EarringsCostco$999.9912 January 202618 January 2026
Costco Round Brilliant 1.65 ct VVS1 Clarity, D Color Diamond Platinum Solitaire Ring offerRound Brilliant 1.65 ct VVS1 Clarity, D Color Diamond Platinum Solitaire RingCostco$26,999.9912 January 202618 January 2026
Costco Round Brilliant 2.00 ctw VS2 Clarity, I Color Diamond Platinum Band offerRound Brilliant 2.00 ctw VS2 Clarity, I Color Diamond Platinum BandCostco$3,999.9912 January 202618 January 2026
Costco Round Brilliant 0.83 ctw VS2 Clarity, I Color Diamond 14kt White Gold Men's Ring offerRound Brilliant 0.83 ctw VS2 Clarity, I Color Diamond 14kt White Gold Men's RingCostco$2,499.9905 January 202611 January 2026
Costco Round Brilliant 0.60 ctw VS2 Clarity, I Color Diamond 14kt White Gold Stud Earrings offerRound Brilliant 0.60 ctw VS2 Clarity, I Color Diamond 14kt White Gold Stud EarringsCostco$999.9905 January 202611 January 2026
Costco Round Brilliant 1.65 ct VVS1 Clarity, D Color Diamond Platinum Solitaire Ring offerRound Brilliant 1.65 ct VVS1 Clarity, D Color Diamond Platinum Solitaire RingCostco$26,999.9905 January 202611 January 2026
Costco Oval & Round Brilliant 14.19 ctw VS2 Clarity, I Color Diamond 18kt White Gold Necklace offerOval & Round Brilliant 14.19 ctw VS2 Clarity, I Color Diamond 18kt White Gold NecklaceCostco$34,999.9905 January 202611 January 2026
Costco Round Brilliant 1.22 ctw VS2 Clarity, I Color Diamond Platinum Wedding Set offerRound Brilliant 1.22 ctw VS2 Clarity, I Color Diamond Platinum Wedding SetCostco$3,299.9905 January 202611 January 2026
Costco Round Brilliant 7.00 ctw VS2 Clarity, I Color Diamond 18kt White Gold Hoop Earrings offerRound Brilliant 7.00 ctw VS2 Clarity, I Color Diamond 18kt White Gold Hoop EarringsCostco$12,999.9905 January 202611 January 2026
Costco Garnet and Diamond 14kt Yellow Gold Pendant offerGarnet and Diamond 14kt Yellow Gold PendantCostco$799.9905 January 202611 January 2026
Costco GreenPan Spectra Diamond 3-piece Frypan Set offerGreenPan Spectra Diamond 3-piece Frypan SetCostco$169.9905 January 202611 January 2026
Costco Round Brilliant 1.76 ctw VVS2 Clarity, D Color Diamond Platinum Halo Ring offerRound Brilliant 1.76 ctw VVS2 Clarity, D Color Diamond Platinum Halo RingCostco$13,999.9930 December 202504 January 2026
Costco Round Brilliant 1.07 ct VVS2 Clarity, H Color Diamond Platinum Solitaire Ring offerRound Brilliant 1.07 ct VVS2 Clarity, H Color Diamond Platinum Solitaire RingCostco$6,999.9930 December 202504 January 2026
Costco Radiant Cut 2.02 ct VS2 Clarity, F Color Diamond Platinum Solitaire Ring offerRadiant Cut 2.02 ct VS2 Clarity, F Color Diamond Platinum Solitaire RingCostco$22,999.9922 December 202528 December 2025
Costco Cushion Cut 1.80 ct VVS2 Clarity, D Color Diamond Platinum Solitaire Ring offerCushion Cut 1.80 ct VVS2 Clarity, D Color Diamond Platinum Solitaire RingCostco$24,999.9922 December 202528 December 2025
Costco Round Brilliant 12.00 ctw VS2 Clarity, G Color Diamond 14kt White Gold Strand Necklace offerRound Brilliant 12.00 ctw VS2 Clarity, G Color Diamond 14kt White Gold Strand NecklaceCostco$13,999.9922 December 202528 December 2025
Costco Cushion Cut 3.01 ct VS2 Clarity, G Color Diamond Platinum Solitaire Ring offerCushion Cut 3.01 ct VS2 Clarity, G Color Diamond Platinum Solitaire RingCostco$46,999.9922 December 202528 December 2025
Costco Round Brilliant 8.00 ctw VS2 Clarity, I Color Diamond 14kt Gold Tennis Bracelet offerRound Brilliant 8.00 ctw VS2 Clarity, I Color Diamond 14kt Gold Tennis BraceletCostco$7,999.9922 December 202528 December 2025
Costco Round Brilliant 1.20 ctw VS2 Clarity, I Color Diamond Platinum Three Stone Ring offerRound Brilliant 1.20 ctw VS2 Clarity, I Color Diamond Platinum Three Stone RingCostco$2,399.9722 December 202528 December 2025
Costco Princess Cut 0.73 ctw VS2 Clarity, G Color Diamond 14kt Gold Stud Earrings offerPrincess Cut 0.73 ctw VS2 Clarity, G Color Diamond 14kt Gold Stud EarringsCostco$999.9922 December 202528 December 2025
Costco Round Brilliant 7.00 ctw VS2 Clarity, I Color Diamond 18kt White Gold Hoop Earrings offerRound Brilliant 7.00 ctw VS2 Clarity, I Color Diamond 18kt White Gold Hoop EarringsCostco$12,999.9915 December 202521 December 2025
Costco Garnet and Diamond 14kt Yellow Gold Ring offerGarnet and Diamond 14kt Yellow Gold RingCostco$1,699.9915 December 202521 December 2025
Costco Princess Cut 1.71 ctw VS2 Clarity, I Color Diamond Platinum Ring offerPrincess Cut 1.71 ctw VS2 Clarity, I Color Diamond Platinum RingCostco$5,499.9715 December 202521 December 2025
Costco Round Brilliant 0.36 ctw VS2 Clarity, I Color Diamond 14kt White Gold Stud Earrings offerRound Brilliant 0.36 ctw VS2 Clarity, I Color Diamond 14kt White Gold Stud EarringsCostco$399.9915 December 202521 December 2025
Costco Round Brilliant 0.35 ctw VS2 Clarity, I Color Diamond 14kt Gold Hoop Earrings offerRound Brilliant 0.35 ctw VS2 Clarity, I Color Diamond 14kt Gold Hoop EarringsCostco$499.9915 December 202521 December 2025
Costco Cushion Cut 1.80 ct VVS2 Clarity, D Color Diamond Platinum Solitaire Ring offerCushion Cut 1.80 ct VVS2 Clarity, D Color Diamond Platinum Solitaire RingCostco$24,999.9915 December 202521 December 2025
Costco 14kt Yellow Gold High Polish & Diamond Cut Round Box offer14kt Yellow Gold High Polish & Diamond Cut Round BoxCostco$1,099.9908 December 202514 December 2025
Costco Round Brilliant 0.80 ctw VS2 Clarity, I Color Solitaire Diamond 14kt White Gold Stud Earrings offerRound Brilliant 0.80 ctw VS2 Clarity, I Color Solitaire Diamond 14kt White Gold Stud EarringsCostco$1,199.9908 December 202514 December 2025
Costco Round Brilliant 0.14 ctw VS2 Clarity, I Color Diamond 14kt Gold Necklace offerRound Brilliant 0.14 ctw VS2 Clarity, I Color Diamond 14kt Gold NecklaceCostco$499.9908 December 202514 December 2025
Costco 14kt Gold Diamond Cut Round Box Chain offer14kt Gold Diamond Cut Round Box ChainCostco$369.9908 December 202514 December 2025
Costco Lab Created Emerald and Diamond 14kt White Gold Pendant offerLab Created Emerald and Diamond 14kt White Gold PendantCostco$699.9901 December 202507 December 2025
Costco Round Brilliant 4.00 ctw VS2 Clarity, I Color Diamond Eternity Band offerRound Brilliant 4.00 ctw VS2 Clarity, I Color Diamond Eternity BandCostco$4,499.9901 December 202507 December 2025
Costco Round Brilliant 1.50 ctw VS2 Clarity, I Color Diamond Platinum Ring offerRound Brilliant 1.50 ctw VS2 Clarity, I Color Diamond Platinum RingCostco$4,199.9901 December 202507 December 2025
Costco Round Brilliant 5.00 ctw VS2 Clarity, G Color Diamond 14kt Gold Strand Necklace offerRound Brilliant 5.00 ctw VS2 Clarity, G Color Diamond 14kt Gold Strand NecklaceCostco$4,999.9901 December 202507 December 2025
Costco Round Brilliant 2.50 ctw VS2 Clarity, I Color Diamond Platinum Band offerRound Brilliant 2.50 ctw VS2 Clarity, I Color Diamond Platinum BandCostco$3,999.9901 December 202507 December 2025
Costco Round Brilliant 1.00 ctw VS2 Clarity, I Color Diamond 14kt White Gold Earrings offerRound Brilliant 1.00 ctw VS2 Clarity, I Color Diamond 14kt White Gold EarringsCostco$799.9901 December 202507 December 2025
Costco Round Brilliant 3.00 ctw VS2 Clarity, I Color Diamond Platinum Wedding Set offerRound Brilliant 3.00 ctw VS2 Clarity, I Color Diamond Platinum Wedding SetCostco$6,999.9901 December 202507 December 2025
Costco Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond 14kt White Gold Eternity Band offerRound Brilliant 2.00 ctw VS2 Clarity, G Color Diamond 14kt White Gold Eternity BandCostco$2,499.9901 December 202507 December 2025
Costco Blue Sapphire and Diamond 14kt White Gold Earrings offerBlue Sapphire and Diamond 14kt White Gold EarringsCostco$899.9901 December 202507 December 2025
Costco Amethyst and Diamond 14kt White Gold Bar Necklace offerAmethyst and Diamond 14kt White Gold Bar NecklaceCostco$349.9901 December 202507 December 2025
Costco Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond 14kt White Gold Eternity Band offerRound Brilliant 2.00 ctw VS2 Clarity, G Color Diamond 14kt White Gold Eternity BandCostco$1,999.9928 November 202530 November 2025
Costco Round Brilliant 1.50 ctw VS2 Clarity, I Color Diamond 14kt White Gold Double Halo Earrings offerRound Brilliant 1.50 ctw VS2 Clarity, I Color Diamond 14kt White Gold Double Halo EarringsCostco$1,599.9928 November 202530 November 2025
Costco Round Brilliant 8.00 ctw VS2 Clarity, I Color Diamond 14kt Gold Tennis Bracelet offerRound Brilliant 8.00 ctw VS2 Clarity, I Color Diamond 14kt Gold Tennis BraceletCostco$6,999.9928 November 202530 November 2025
Costco Round Brilliant 4.00 ctw VS2 Clarity, I Color Diamond Eternity Band offerRound Brilliant 4.00 ctw VS2 Clarity, I Color Diamond Eternity BandCostco$4,499.9928 November 202530 November 2025
Costco Blue Sapphire and Diamond 14kt White Gold Earrings offerBlue Sapphire and Diamond 14kt White Gold EarringsCostco$899.9928 November 202530 November 2025
Costco Round Brilliant 1.30 ctw VS2 Clarity, G Color Diamond 18kt White Gold Halo Necklace offerRound Brilliant 1.30 ctw VS2 Clarity, G Color Diamond 18kt White Gold Halo NecklaceCostco$5,499.9928 November 202530 November 2025
Costco Round Brilliant 2.50 ctw VS2 Clarity, I Color Diamond Platinum Band offerRound Brilliant 2.50 ctw VS2 Clarity, I Color Diamond Platinum BandCostco$3,999.9928 November 202530 November 2025
Costco Round Brilliant 0.36 ctw VS2 Clarity, I Color Diamond 14kt White Gold Stud Earrings offerRound Brilliant 0.36 ctw VS2 Clarity, I Color Diamond 14kt White Gold Stud EarringsCostco$399.9928 November 202530 November 2025
Costco Round Brilliant 5.00 ctw VS2 Clarity, G Color Diamond 14kt Gold Strand Necklace offerRound Brilliant 5.00 ctw VS2 Clarity, G Color Diamond 14kt Gold Strand NecklaceCostco$4,999.9928 November 202530 November 2025
Costco Round Brilliant 1.00 ctw VS2 Clarity, I Color Diamond 14kt White Gold Earrings offerRound Brilliant 1.00 ctw VS2 Clarity, I Color Diamond 14kt White Gold EarringsCostco$799.9928 November 202530 November 2025
Costco Round Brilliant 0.50 ctw VS2 Clarity, I Color Diamond 14kt Gold Hoop Earrings offerRound Brilliant 0.50 ctw VS2 Clarity, I Color Diamond 14kt Gold Hoop EarringsCostco$549.9928 November 202530 November 2025
Costco Round Brilliant 0.15 ctw VS2 Clarity, I Color Diamond 14kt Gold Heart Pendant offerRound Brilliant 0.15 ctw VS2 Clarity, I Color Diamond 14kt Gold Heart PendantCostco$449.9924 November 202527 November 2025
Costco Round Brilliant 7.00 ctw VS2 Clarity, I Color Diamond 18kt White Gold Hoop Earrings offerRound Brilliant 7.00 ctw VS2 Clarity, I Color Diamond 18kt White Gold Hoop EarringsCostco$12,999.9924 November 202527 November 2025
Costco Montacute Hand Knotted Rug Collection, Diamond Medallion Redfield Red offerMontacute Hand Knotted Rug Collection, Diamond Medallion Redfield RedCostco$349.9917 November 202523 November 2025
Costco Princess Cut 0.73 ctw VS2 Clarity, G Color Diamond 14kt Gold Stud Earrings offerPrincess Cut 0.73 ctw VS2 Clarity, G Color Diamond 14kt Gold Stud EarringsCostco$999.9917 November 202523 November 2025
Costco Round Brilliant 2.00 ctw VVS2 Clarity, H Color Diamond Platinum Stud Earrings offerRound Brilliant 2.00 ctw VVS2 Clarity, H Color Diamond Platinum Stud EarringsCostco$12,999.9917 November 202523 November 2025
Costco Round Brilliant 1.00 ctw VS2 Clarity, I Color Diamond 14kt Gold Three Stone Pendant offerRound Brilliant 1.00 ctw VS2 Clarity, I Color Diamond 14kt Gold Three Stone PendantCostco$1,499.9910 November 202516 November 2025
Costco Princess Cut 0.73 ctw VS2 Clarity, G Color Diamond 14kt Gold Stud Earrings offerPrincess Cut 0.73 ctw VS2 Clarity, G Color Diamond 14kt Gold Stud EarringsCostco$999.9910 November 202516 November 2025
Costco G.A. Gertmenian & Sons Montacute Hand Knotted Rug Collection, Diamond Medallion Redfield Red offerG.A. Gertmenian & Sons Montacute Hand Knotted Rug Collection, Diamond Medallion Redfield RedCostco$4,699.9910 November 202516 November 2025
Costco Round Brilliant 2.50 ctw VS2 Clarity, I Color Diamond Platinum Band offerRound Brilliant 2.50 ctw VS2 Clarity, I Color Diamond Platinum BandCostco$4,799.9910 November 202516 November 2025
Costco Round Brilliant 1.30 ctw VS2 Clarity, I Color Diamond 14kt Yellow Gold Bar Necklace offerRound Brilliant 1.30 ctw VS2 Clarity, I Color Diamond 14kt Yellow Gold Bar NecklaceCostco$1,599.9910 November 202516 November 2025
Costco Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond 14kt White Gold Eternity Band offerRound Brilliant 2.00 ctw VS2 Clarity, G Color Diamond 14kt White Gold Eternity BandCostco$1,999.9910 November 202516 November 2025
Costco 14kt Yellow Gold High Polish & Diamond Cut Round Box Chain offer14kt Yellow Gold High Polish & Diamond Cut Round Box ChainCostco$1,299.9910 November 202516 November 2025
Costco Round Brilliant 0.14 ctw VS2 Clarity, I Color Diamond 14kt Gold Necklace offerRound Brilliant 0.14 ctw VS2 Clarity, I Color Diamond 14kt Gold NecklaceCostco$449.9910 November 202516 November 2025
Costco Round Brilliant 0.20 ctw VS2 Clarity, I Color Diamond 14kt Yellow Gold Zodiac Pendant offerRound Brilliant 0.20 ctw VS2 Clarity, I Color Diamond 14kt Yellow Gold Zodiac PendantCostco$599.9710 November 202516 November 2025
Costco Round Brilliant 0.90 ctw VS2 Clarity, I Color Diamond 14kt Gold Band offerRound Brilliant 0.90 ctw VS2 Clarity, I Color Diamond 14kt Gold BandCostco$999.9903 November 202509 November 2025
Costco Oval Cut 8 x 6 mm Morganite & Diamond 14kt White Gold Bracelet offerOval Cut 8 x 6 mm Morganite & Diamond 14kt White Gold BraceletCostco$10,499.9903 November 202509 November 2025
Costco Emerald & Round Brilliant 1.39 ctw VS2 Clarity, I Color Diamond 14kt White Gold Ring offerEmerald & Round Brilliant 1.39 ctw VS2 Clarity, I Color Diamond 14kt White Gold RingCostco$1,999.9903 November 202509 November 2025
Costco Round Brilliant 1.00 ct VS2 Clarity, I Color Diamond Solitaire Ring offerRound Brilliant 1.00 ct VS2 Clarity, I Color Diamond Solitaire RingCostco$3,999.9903 November 202509 November 2025
Costco Round Brilliant 1.40 ctw VS2 Clarity, I Color Diamond 14kt White Gold Wedding Set offerRound Brilliant 1.40 ctw VS2 Clarity, I Color Diamond 14kt White Gold Wedding SetCostco$2,199.9903 November 202509 November 2025
Costco 4mm Comfort Fit Diamond Cut and High Polish Beveled Edge Wedding Band offer4mm Comfort Fit Diamond Cut and High Polish Beveled Edge Wedding BandCostco$284.9903 November 202509 November 2025
Costco Round Brilliant 2.50 ctw VS2 Clarity, I Color Diamond Platinum Band offerRound Brilliant 2.50 ctw VS2 Clarity, I Color Diamond Platinum BandCostco$4,799.9903 November 202509 November 2025
Costco Round Brilliant 0.20 ctw VS2 Clarity, I Color Diamond 14kt Yellow Gold Zodiac Pendant offerRound Brilliant 0.20 ctw VS2 Clarity, I Color Diamond 14kt Yellow Gold Zodiac PendantCostco$599.9703 November 202509 November 2025
Costco Round Brilliant 1.28 ctw VS2 Clarity, I Color Diamond 14kt Yellow Gold Band offerRound Brilliant 1.28 ctw VS2 Clarity, I Color Diamond 14kt Yellow Gold BandCostco$1,499.9903 November 202509 November 2025
Costco Round Brilliant 0.75 ctw VS2 Clarity, G Color Diamond 14kt White Gold Ring offerRound Brilliant 0.75 ctw VS2 Clarity, G Color Diamond 14kt White Gold RingCostco$1,099.9903 November 202509 November 2025
Costco London Blue Topaz and Diamond 14kt White Gold Ring offerLondon Blue Topaz and Diamond 14kt White Gold RingCostco$749.9903 November 202509 November 2025
Costco Round Brilliant 0.20 ctw VS2 Clarity, I Color Diamond 14kt Yellow Gold Zodiac Pendant offerRound Brilliant 0.20 ctw VS2 Clarity, I Color Diamond 14kt Yellow Gold Zodiac PendantCostco$599.9727 October 202502 November 2025
Costco Oval Cut 8 x 6 mm Morganite & Diamond 14kt White Gold Bracelet offerOval Cut 8 x 6 mm Morganite & Diamond 14kt White Gold BraceletCostco$10,499.9927 October 202502 November 2025
Costco Round Brilliant 0.20 ctw VS2 Clarity, I Color Diamond 14kt Yellow Gold Zodiac Pendant offerRound Brilliant 0.20 ctw VS2 Clarity, I Color Diamond 14kt Yellow Gold Zodiac PendantCostco$599.9720 October 202526 October 2025
Costco Bulova Classic Diamond Malachite Stainless Steel Quartz Women's Watch, 34mm offerBulova Classic Diamond Malachite Stainless Steel Quartz Women's Watch, 34mmCostco$349.9920 October 202526 October 2025
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Costco Diamond deal

At Costco, you’ll find a wide selection and range of ⭐️Diamond deals⭐️. This week, Costco has 8 Diamond deals in the weekly ad. Remove your filters to view all Diamond deals, find the best prices, and save on your next purchase. Use the filters to find the deals of your favourite shop or product to make your purchases as cheap as possible, for the lowest price. You can save your search to stay updated when Diamond is on deal again in this or next week’s weekly ad. Is the product not on promotion now but still needed? Check out similar deals to find an alternative.

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Last update: Wednesday, January 7, 2026
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